Used smog hose. Connects the metal "T" connector to the check valve. 1967 Mercury Cougar and 1967 Ford Mustang with C and A code 289 engines, and typical California Thermactor smog system. Hose only, no clamps included. Hose is about 19 inches long with a 90 degree bend. Inside diameter is 3/4 inch.
Ford part number C7OE-9H534-A.